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Metal recovery from coal ash via chlorination — A thermodynamic study
Author(s) -
Mehrotra Anil K.,
Bishnoi P. R.,
Svrcek W. Y.
Publication year - 1979
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450570214
Subject(s) - fly ash , titanium , coal , metal , aluminium , atmospheric temperature range , mineral , chemistry , materials science , metallurgy , chemical engineering , thermodynamics , organic chemistry , physics , engineering
Coal ash can become an important mineral substitute for the recovery of several metals, especially aluminum and titanium. A plausible route for the recovery could be via high temperature chlorination in the presence of a reducing agent. The thermodynamics of the reaction system for the free energy computations consisted of 135 chemical species containing 12 elements, namely Al, C, Ca, CI, Fe, K, Mg, Na, O, S, Si and Ti. The results indicate that the chlorination route is feasible over a wide temperature range.